20658209

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:629

約数の個数: 24

約数和(自身を含む): 25561536

約数和(自身を除く): 4903327

約数列:

[1, 11, 13, 23, 121, 143, 253, 299, 571, 1573, 2783, 3289, 6281, 7423, 13133, 36179, 69091, 81653, 144463, 170729, 898183, 1589093, 1878019, 20658209]

約数ペア:

[(1, 20658209), (11, 1878019), (13, 1589093), (23, 898183), (121, 170729), (143, 144463), (253, 81653), (299, 69091), (571, 36179), (1573, 13133), (2783, 7423), (3289, 6281)]